PAS-C01 Migration Practice Question
A company is migrating its SAP ERP system to AWS. The SAP application requires low-latency access to the database and high network throughput between application and database tiers. Which AWS architecture should the company use?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use a placement group with enhanced networking for both application and database instances.
Using a placement group with enhanced networking for both application and database instances ensures low latency and high network throughput between tiers. Option A is incorrect because placing the SAP application servers in a different AWS Region than the database adds significant latency due to geographic distance. Option B is incorrect because Amazon S3 is an object storage service, not a suitable database storage layer for SAP ERP, which requires block storage with low latency. Option C is incorrect because placing the application servers in one Availability Zone and the database in another Availability Zone introduces additional network latency compared to placing them in the same AZ with a placement group.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Place the SAP application servers in a different AWS Region than the database.
Why it's wrong here
Cross-Region latency is too high for SAP.
- ✗
Use Amazon S3 as the database storage layer.
Why it's wrong here
Amazon S3 provides object storage with high durability but lacks the low-latency transactional consistency and row-level locking required by SAP ERP’s database tier for real-time application queries. It is tempting because S3 offers virtually unlimited scalability and cost-effective storage for backups or archives, which would be correct for a data lake or static file repository, not for a live relational database workload demanding sub-millisecond read/write performance.
- ✗
Place the SAP application servers in one Availability Zone and the database in another Availability Zone.
Why it's wrong here
Cross-AZ traffic adds latency.
- ✓
Use a placement group with enhanced networking for both application and database instances.
Why this is correct
Placement groups provide low latency and high throughput within a single AZ.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
Go deeper
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PAS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PAS-C01 exam.